14-20-45-75 or 7.5-25-45-75

I'm m43 user since november 2012. i got GF5 that i didn't like and bought 14mm and 20mm for travels.

I sold my GF5 and bought GF1.

i added 45mm and 75mm. I don't like zoom (except 7-14mm that i dream to get one some day).

i love rendering effect of Leica 25mm and i'm starting to think that 14mm and 20mm are closer than i think before. i don't use 14mm anymore, i even use 20mm for landscape..

So i think to sell some of my lens and to get some news lens then i can balance of use. i think to buy an 25mm Leica for street (then replace my 20mm) and a Samyang for Landscapes (to replace my 14mm).

What do you think? then i can use a lot the fisheye for Landscape (that i can defish some pics if it need). I read 7.5mm was sharper than 14mm even it's not same of range and use.

Idealy I would have 12-17-25-45-60 as a good prime set, that I can not afford even the lowest cost options is a pain though. I would wonder about the gap between the 7.5 and the 25, the 7.5 is available for a lot less than the 12. With the lens mentioned I would first try 14-25-45-75 and see if it works for you, though I find a significant difference between 14 17 and 25 or eqivalents. 14 or 28 is an odd one for me its fine on 43 645 but I am none too keen on 32 with that angle of view. Perhaps you find the angle is wrong for you in the format. I have to admit though that I would go for 25 over 20 any time, I love my 50mm type lenses and will just use one or equivalents for months on end.

The 25mm is not really a replacement if you like using your 20mm for close up shooting. If you sell the 20 for the 25, I'd keep the 14 since it does focus closely adequately and there is a bigger difference between 14 and 25. The 7.5 is insanely sharp, though it's slow at 3.5, but would make for good environmental and landscape shots if that's your thing.

A fisheye is a rather specialist lens. Unless you really get your creativity going by its limitations, this is the last lens you should buy. If you're into wide angle, the 7-14 is an extremely useful lens. It pairs very well with the 25 in daily shooting.

On the tele end, why pick the 75? It seems to be (I dont own it) a beautiful lens, but what does it add for you next to a 45? Why not drop the 75 and spend the money on the 7-14? Another option would be to replace the 45+75 by the 60 macro. Solves most of your close-up needs as well.

I would choose the setup with the 7.5 fisheye lens as i feel that 14 and 20 will overlap in usage plus i prefer the images i get from the pana 25. But if you could, spring for the 7-14mm. it will compliment the rest of your primes nicely and could be the only zoom you need.

when do you defish a pic from a pic taken by a samyang 7.5, are corners very sharps? because can't see very well and it's not possible to zoom the pics in flickr, it's stuck on loading. it would be nice if you make some crop at corners of thoses pics you posted. Thanks advance.

I'm personally not into fisheye, and even defished I don't care for the wavy lines. For me, if I wanted to go wide I'd either get the 9-18 or 7-14. Right now I am just shooting the 14 and 45. I'm sure I'll get something in between at some point, but I was under financial limitations. I think my preferred lineup would be the 9-18, 17, 25, 45, and 75. But that seems like a lot of lens changing for me, so maybe the 12-35, and new 40-150. Or, for a lighter kit still, the new 14-140 and a 17 for low light. Or.... Man it's great to have so many lenses to choose from.

I travel with the 7.5mm fisheye, the Panasonic 20mm, the Olympus 45mm, and a canon FD 100mm f2. I find the fisheye so sharp and so useful. It is creative and fun and when I need a straight wide angle I can defish it and it is still sharp. You don't have to worry about focus and the focal length is so short I have taken night street shots at 1.6 seconds and the om-d ibis gives me sharp shots. The P20 is such a useful street and landscape lens, and the O45 is wonderful food portraits @1.8. The canon FD is amazingly sharp at f2 on the little m43 sensor and the focal length gives better bokeh than the O75...and at 25% of the price...